That's good information. I hadn't really considered an aftermarket tune. A quick search doesn't seem to reveal very much for this car yet though, but I might be looking wrong; I don't have any experience in that area. Is this just something you are doing yourself, or having done locally?I don't doubt the bimmer is much more nimble, but I suspect what you are experiencing with the speed is the torque management. The Sport's peak torque is at 3k and it makes pretty respectable numbers below that. The problem is that the car is electronically limited on the launch, so it takes a moment before it lets you have what you're asking for. With a tune that reduces the effect of the TM you can actually brake boost the launch. The stock tune wont let you build any boost until you're moving. I'm on rev. 2 of a custom tune that doesn't even have any boost added yet and it's a HUGE difference from stock. This thing will be an animal when this tune is finished.
Launch Control on the 335 is one of my favorite features. I mean, I hardly use it because I'm too old to be drag racing at lights, but when I get to play with it, I enjoy it. Be interesting to see how well it worked on the Fusion once it was possible.